Previous versions of Puppy are Wary, a conservative design for older hardware, Lucid Puppy 528 and Racy. Quirky is used to test new ideas from Barry Kauler, the original creator of Puppy.
Dpup (Puppy + Debian) is designated as Puppy 6, currently being developed by Dejan555 and IgulederSaluki Puppy rewrite is likely to move up to Puppy 7
Puppy 8 is likely to offer x86, ARM and 64 bit versions and have support for tablet, phone, touch, cloud and Android features